R.A. Brockbank

Tranexamic acid versus placebo to prevent bleeding in patients with haematological malignancies and severe thrombocytopenia (TREATT): a randomised, double-blind, parallel, phase 3 superiority trial

Lise J Estcourt, Zoe McQuilten, Peter Bardy, Merrole Faye Cole-Sinclair et autres

Anglo-Canadian transatlantic telephone cable (CANTAT). Cable development, design and manufacture

R.A. Brockbank, E.F.S. Clarke, F. W. Jones

In 1951, the British Post Office evolved an entirely new type of deep-sea submarine telephone cable which was intended to overcome many of the serious disadvantages inherent in conventional wire-armoured cable. This new cable, known as the Lightweight cable because of its …

gb (code pays fourni par la source)

Repeater design for the Newfoundland–Nova Scotia link

R.A. Brockbank, D.C. Walker, V.G. Welsby

The Newfoundland-Nova Scotia link required the provision of 16 submerged repeaters each transmitting 60 circuits in the bands 20–260kc/s from Nova Scotia to Newfoundland and 312–552kc/s in the opposite direction. The paper deals with the design and production of these repeaters. Each …

Repeater Design for the Newfoundland-Nova Scotia Link

R.A. Brockbank, D.C. Walker, V.G. Welsby

The Newfoundland-Nova Scotia cable required the provision of 16 submerged repeaters each transmitting 60 circuits in the bands 20–260 kc from Newfoundland to Nova Scotia and 312–552 kc in the opposite direction. The paper deals with the design and production of these …

Repeater design for the Newfoundland - Nova Scotia link

R.A. Brockbank, D.C. Walker, V.G. Welsby

The Newfoundland-Nova Scotia cable required the provision of 16 submerged repeaters each transmitting 60 circuits in the bands 20 to 260 kc from Newfoundland to Nova Scotia, and 312 to 552 kc in the opposite direction. This paper deals with the design …

A new deep-sea coaxial cable

R.A. Brockbank, A.L. Meyers

Development work during the last five years has resulted in a new type of deep-sea coaxial cable which is cheaper and lighter than the present conventional type. It has no external armour and is virtually free from any tendency to kink. Ocean …

Multi-channel radio-frequency amplifiers

R.F.J. Jarvis, R.A. Brockbank

The economic advantages of wide-band multi-channel transmission either by radio or high-frequency cable links were appreciated early in the war, and systems of this type were developed on a wide scale. The simultaneous amplification of the channel signals without introducing noticeable distortion …

gb (code pays fourni par la source)

Non-linear distortion in transmission systems

R.A. Brockbank, C.A.A. WASS

The problem of the distortion noise generated by a signal in its transmission through one or more non-linear devices is analysed. This subject has become of increasing importance in connection with the development of the transmission of different types of signals on …

Errors in power-factor measurement due to terminal losses on short lengths of cable

R.A. Brockbank

It is frequently necessary for economic reasons to carry out tests on short cable samples. Measurements of a.c. leakance and power factor on short lengths of power or submarine cables may be subject to considerable error unless due allowance is made for …

Sheath and armour losses in single-core cables for single-phase and three-phase transmission

R.A. Brockbank, J. K. Webb

The accurate practical determination of inductive losses in an a.c. system of single-core lead-covered cables is considered in detail, and test-results which are correlated with calculations are quoted by way of illustration.Bridge methods have been developed for the measurement of both the …